Samsung is reportedly planning battery upgrades for its upcoming Galaxy S26 series, with the standard Galaxy S model being replaced by a more advanced “Pro” version. According to reports, the Galaxy S26 Pro (code-named M1, model number SM-S942) will feature a 4,300mAh battery, a 300mAh increase compared to the Galaxy S25’s 4,000mAh capacity.
In addition to the battery upgrade, the S26 Pro is expected to replace the 50MP ISOCELL GN3 sensor, used in the S23, S24, and S25, with a potentially improved sensor like the ISOCELL GN5. While the GN5 maintains a 50MP resolution and similar pixel size, it offers enhanced autofocus performance and Front Deep Trench Isolation for Dual Pixel sensors.
The Samsung Galaxy S26 Edge (M2, SM-S947) is also slated for a battery increase, reportedly reaching 4,200mAh, a 300mAh bump from the S25 Edge. Furthermore, the S26 Edge is expected to be thinner than the current model, which measures 5.8mm.
Rumors suggest that the Galaxy S26 Ultra may receive a charging speed upgrade to 60W, exceeding the 45W charging of previous models. However, the battery capacity for the S26 Ultra remains uncertain, with sources indicating either a 10% increase to 5,500mAh or remaining at 5,000mAh.
The charging speeds for the S26 Pro and S26 Edge are not expected to receive an upgrade, potentially remaining capped at 25W due to battery capacities similar to the Z Flip7 (4,300mAh) and Z Fold7 (4,400mAh), which also have 25W charging limits.
